{"product_id":"cobb-nexgen-stage-1-to-stage-2-flex-fuel-power-package-upgrade-w-blue-intake-2015-2018-sti","title":"COBB Stage 1 to NexGen Stage 2+ Flex Fuel Power Package Upgrade w\/ Blue Intake | Subaru STI 2015-18 (SUB004NG2S1FF-S1-UP-BL)","description":"\u003ch1\u003eCOBB Power Package Upgrade\u003c\/h1\u003e  \n\u003ch2\u003eFitment: 2015-2018 Subaru WRX STI\u003c\/h2\u003e  \n\u003cp\u003e\u003cstrong\u003ePart #:\u003c\/strong\u003e SUB004NG2S1FF-S1-UP-BL\u003c\/p\u003e  \n\n\u003ch3\u003eOverview\u003c\/h3\u003e  \n\u003cp\u003eThe COBB NexGen Stage 1 to Stage 2+ Flex Fuel Power Package Upgrade is a comprehensive performance drivetrain enhancement designed specifically for the 2015-2018 Subaru WRX STI. This upgrade is intended for enthusiasts who already own the COBB Stage 1 Power Package and want to elevate their vehicle’s power and fuel flexibility. By integrating advanced intake components, fuel system upgrades, and flex fuel capability, this package supports improved engine response and adaptability to ethanol blends.\u003c\/p\u003e  \n\u003cp\u003eThis upgrade benefits drivers seeking enhanced throttle response, optimized fuel delivery, and the ability to run flex fuel blends for greater tuning versatility. It combines durability with precision engineering to help your STI perform more efficiently under demanding conditions while maintaining reliability.\u003c\/p\u003e  \n\n\u003ch3\u003eKey Features\u003c\/h3\u003e  \n\u003cp\u003eThis power package upgrade includes a carefully selected set of components designed to work in harmony for maximum effect:\u003c\/p\u003e  \n\u003cul\u003e  \n  \u003cli\u003eSF Intake and Airbox for improved airflow and filtration\u003c\/li\u003e  \n  \u003cli\u003eSilicone Turbo Inlet V2 and Throttle Body Coupler to enhance boost response and reduce intake restrictions\u003c\/li\u003e  \n  \u003cli\u003eHigh-performance spark plugs optimized for upgraded fuel delivery\u003c\/li\u003e  \n  \u003cli\u003eTop Feed 1050x Fuel Injectors and High Flow Fuel Pump to support increased fuel demands\u003c\/li\u003e  \n  \u003cli\u003eFuel Pressure Regulator, Fuel Rail Line Kit, and Fuel Rails for precise fuel management\u003c\/li\u003e  \n  \u003cli\u003eNexGen Flex Fuel Ethanol Sensor Kit and Fuel Pressure Sensor Kit for accurate flex fuel monitoring and tuning\u003c\/li\u003e  \n  \u003cli\u003eCOBB Vehicle Badge included as a mark of upgrade completion\u003c\/li\u003e  \n\u003c\/ul\u003e  \n\n\u003ch3\u003eInstallation \u0026amp; Fitment\u003c\/h3\u003e  \n\u003cp\u003eThis upgrade is designed as a direct enhancement for vehicles already equipped with the COBB Stage 1 Power Package. Installation requires verifying compatibility with your existing setup and following COBB’s detailed instructions to ensure proper integration of all components. Fitment is specific to 2015-2018 Subaru WRX STI models, but always confirm against your vehicle’s details and part number before purchase.\u003c\/p\u003e  \n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e  \n\u003cp\u003eDrivers who want to advance their STI’s performance beyond Stage 1, gain flex fuel capability, and improve throttle response will find this package ideal. It suits enthusiasts focused on tuning flexibility and enhanced fuel system support for spirited driving and track use.\u003c\/p\u003e","brand":"COBB","offers":[{"title":"Default Title","offer_id":51602177556767,"sku":"SUB004NG2S1FF-S1-UP-BL","price":3780.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0229\/3877\/files\/cobb-nexgen-stage-1-to-stage-2-flex-fuel-power-package-upgrade-w-blue-intake-2015-2018-sti-sub004ng2s1ff-s1-up-bl-876885.jpg?v=1770429837","url":"https:\/\/shop.wheelflip.com\/products\/cobb-nexgen-stage-1-to-stage-2-flex-fuel-power-package-upgrade-w-blue-intake-2015-2018-sti","provider":"WheelFlip","version":"1.0","type":"link"}